Grabowski, Nikko
Current rating: 1410
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 332 | Goodson, Kyle (1478) | Won 2-1 | +181479 |
| 2standard | 216 | Peterson, Gabriel (1529) | Lost 1-2 | -171462 |
| 3standard | 259 | Plant, John (1523) | Won 2-1 | +191481 |
| 4standard | 254 | Eccles, Ian (1539) | Lost 0-2 | -171464 |
| 5standard | 251 | Lucas, Zephyr (1481) | Lost 1-2 | -181446 |
| 6standard | 418 | Perez, Antonio (1413) | Lost 1-2 | -181428 |
| 7standard | 409 | Murphy, Meg (1451) | Lost 0-2 | -181410 |
| top | average opponent: 1488record: 2-5 | new rating: 1410 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 564 | Pecora, Gerald (1505) | Lost 1-2 | -171409 |
| 2modern | 595 | Hill, Jack (1482) | Won 2-0 | +201429 |
| 3modern | 533 | Brooks, Jesse (1500) | Won 2-1 | +191448 |
| 4modern | 353 | Semerau, Brandon (1666) | Lost 0-2 | -141434 |
| 5modern | 704 | Cyr, Gerrit (1500) | Won 2-1 | +191453 |
| 6modern | 499 | Siewert, Nicholas (1473) | Won 2-0 | +191472 |
| 7modern | 248 | Marx, Matthew (1521) | Won 2-0 | +181490 |
| 8modern | 255 | Kuhlow, Chris (1607) | Lost 0-2 | -151475 |
| 9modern | 266 | Merced, Davis (1709) | Lost 0-2 | -141461 |
| top | average opponent: 1551record: 5-4 | new rating: 1461 | ||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Simmons, Frank (1500) | Lost 0-2 | -181482 |
| 2sealed | 658 | Yaman, Robert (1482) | Lost 0-2 | -181464 |
| 3sealed | 876 | Gentry, David (1452) | Lost 1-2 | -181446 |
| 4sealed | 821 | Olsen, Michael (1346) | Lost 0-2 | -201426 |
| top | average opponent: 1445record: 0-4 | new rating: 1426 | ||